JP2003275245A - Disposable diaper - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a disposable diaper in which an unused fastening tape folded back on a back body part and set peelably temporarily on a top sheet can easily be peeled off. <P>SOLUTION: The disposable diaper is provided with a diaper main body 1 having a liquid retainable absorption body 4 between a liquid-permeable top sheet 3 formed of a nonwoven fabric and a liquid-impermeable back sheet 5 and with a fastening tape 40 which is fixed to the side end 15a of a back body part and protrudes laterally so as to fix the back body part 13 of the diaper main body to a front body part 11 when the diaper is used. The protruded part of the fastening tape comprises a fixing part 43 having a male material 47 of a face fastener and a pinch 49 at the tip of the fixing part. The fixing part is folded back onto the surface of the top sheet and is temporarily peelably set thereon with the male material 47 and the pinch is raised on the surface of the top sheet, before the fastening tape is used. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a deployable disposable diaper having a fastening tape.

[0002]

2. Description of the Related Art An expandable disposable diaper, as expanded and shown in FIG. 8, has a liquid-permeable top sheet 3, a liquid-impermeable back sheet 5, and a liquid-retaining material interposed therebetween. The diaper main body 1 has a substantially three-layer structure in which a flexible absorber 4 is laminated. The diaper body 1 is roughly divided into a front body 11 that is applied to the wearer's abdomen when worn by the wearer, a back body 13 that is applied to the back, a front body 11 and a back body 13. It is roughly divided into a crotch part 12 which is located between the crotch part and the crotch part. The front body 11 and the rear body 13 are respectively provided with a pair of left and right side flaps 15 extending from both side ends thereof to each side.

As shown in FIG. 9, the disposable diaper is worn on the wearer by applying the left and right side flaps 15 of the back body 13 to the wearer's armpit while applying the diaper body 1 to the wearer's body. After wrapping around the abdomen through the section, the top flap 3 surface of the side flap side end 15a of the rear body 13 is fixed to the back seat 5 surface of the front body 11.

The fastening is performed by engaging the fastening tape 30 fixed to the side flap side end portion 15a and protruding therefrom and the target tape 19 stuck on the back sheet 5 surface of the front body 11. The protruding portion 30a of the fastening tape 30 is provided with the male material of the surface fastener and functions as a fastening portion.

The deployable disposable diaper thus worn is usually compactly folded and sold. For this reason, the folded diaper must be unfolded into the state shown in FIG. 8 as a preliminary preparation for the wearing, and this unfolding is usually performed as follows.

The front body 11 and the back body 13 folded on the crotch portion 12 are opened forward and backward, respectively. Next, on the front body 11 and the back body 13, the left and right side flaps 15 folded in a double door shape are opened to the left and right to form the side flaps 15.
The top sheet 3 surface of is exposed. Finally, as shown in FIG. 10, the fastening portion 33 of the fastening tape 30 folded back onto the surface of the top sheet 3 of the side flap 15 of the back body 13 is opened laterally from the side end portion 15a. Make it protrude.

[0007]

Unlike the other unfolding operations, the unfastening operation of the fastening tape 30 among them is such that the fastening portion 33 of the unfastened fastening tape 30 is the male member of the surface fastener which is provided by itself. It is detachably temporarily fixed to the top sheet 3 surface by 37.
Therefore, at the time of this deployment, unless the knob portion 39 at the tip of the fastening portion 33 is firmly grasped, the peeling resistance force due to the temporary fastening cannot be overcome and the fastening portion 33 can be opened. However, when the fastening portion 33 is folded back onto the top sheet surface 3, the fastening portion 3
Since the picking portion 39 of No. 3 is substantially flush with the top sheet 3 surface, it is difficult to pick the fastening tape 30 before use, and it may be difficult to deploy the fastening tape 30 before use.

The present invention has been made in view of the above problems, and it is easy to pick up the fastening tape before use which is folded back on the back body and temporarily fixed to the top sheet surface so as to be peelable. The purpose is to provide a disposable diaper that can be deployed to.

[0009]

In order to achieve such an object, the invention described in claim 1 comprises a liquid-retaining absorber between a liquid-permeable top sheet and a liquid-impermeable back sheet made of a non-woven fabric. A disposable diaper having a diaper body and a fastening tape fixed to a side end portion of the rear body so as to fix the rear body of the diaper body to the front body when worn, the fastening method comprising: The protruding portion of the tape is composed of a fastening portion provided with a male material of a hook-and-loop fastener, and a grip portion at the tip of the fastening portion, and before using the fastening tape, the protruding portion is the top sheet surface of the back body. While being folded back upward and temporarily fixed to the top sheet by the male material in a peelable manner, the picking portion is erected on the top sheet surface.

The invention as set forth in claim 2 is characterized in that, in the disposable diaper as set forth in claim 1, folds of valley folds are formed in the knob portion.

According to a third aspect of the present invention, in the disposable diaper according to the second aspect, the fold line is formed within a range of 5 mm or more from a tip edge of the knob portion.

According to a fourth aspect of the present invention, in the disposable diaper according to any one of the first to third aspects, the standing height of the tip edge of the picking portion is 3 mm or more.

According to a fifth aspect of the present invention, there is provided a diaper body having a liquid-retaining absorber between a liquid-permeable top sheet and a liquid-impermeable back sheet made of a non-woven fabric, and a rear body of the diaper body when worn. In a disposable diaper having a fastening tape which is fixed to a side end portion of the back body so as to be fastened to the front body and projects laterally from this, the projecting portion of the fastening tape is provided with a male member of a surface fastener. It consists of a fastening part and a picking part at the tip of the fastening part. Before using the fastening tape, the protruding part is folded back on the topsheet surface of the back body and peeled off to the topsheet by the male material. While being temporarily fixed as much as possible, the front end of the knob portion is further folded back to form a folded back portion.

According to a sixth aspect of the present invention, in the disposable diaper according to the fifth aspect, the folded-back portion is fixed to the upper surface of the fastening tape.

The invention shown in claim 7 is the invention according to claim 5 or 6.
In the disposable diaper described in any one of the above 1, the folded-back portion extends over a range of 5 mm or more from the tip edge of the knob portion.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. As shown in FIG. 8, the disposable diaper according to the first embodiment of the present invention has a liquid-permeable top sheet 3 and a liquid-impermeable back sheet 5, and a liquid-retaining property interposed between them. The diaper body 1 has a substantially three-layer structure in which an absorber 4 is laminated. The diaper body 1 is roughly divided into a front body 11 that is applied to the wearer's abdomen when worn by the wearer, a back body 13 that is applied to the back, a front body 11 and a back body 13. It is roughly divided into a crotch part 12 which is located between the crotch part and the crotch part. Of these, the front body 11 and the back body 13 are a pair of left and right side flaps 15 extending laterally from both side ends thereof.
Is equipped with each.

As shown in FIG. 9, the disposable diaper is worn on the wearer by applying the left and right side flaps 15 of the back body 13 to the wearer's armpit while applying the diaper body 1 to the wearer's body. After wrapping around the abdomen through the section, the top flap 3 surface of the side flap side end 15a of the rear body 13 is fixed to the back seat 5 surface of the front body 11.

The fastening is performed by engaging the fastening tape 40 fixed to the end portion 15a on the side flap 15 side and the target tape 19 stuck to the back sheet 5 surface of the front body 11. At this time, the fastening tape 40 is unfolded and protrudes laterally from the side end portion 15a.

FIG. 1 shows an enlarged plan view of the fastening tape in this unfolded state. The fastening tape 40 includes a wide rectangular fixing portion 41 fixed to the side flap side end portion 15a, a narrow rectangular fixing portion 43 extending from the fixing portion 41, and a tip of the fixing portion. A non-woven fabric having a substantially T-shaped outer shape including the knob 49 is used as a tape base material 45, and a male material 47 of a surface fastener is attached to the fastening portion 43.

When the fastening tape 40 is fixed to the side flap 15 and is in a deployed state, the fastening portion 43 and the knob 49 project sideward from the side flap side end portion 15a. Cage, fastening part 4
The male member 47 of No. 3 makes it possible to be fixed.

On the other hand, FIG. 2 shows an enlarged plan view of the fastening tape before unfolding and a sectional view taken along the line BB in FIG. As shown in the figure, the fastening portion 43, which is the protruding portion of the fastening tape 40, and the knob portion 49 are integrated,
The end portion 1a on the side flap 15 side is folded back onto the surface of the top sheet 3 and is temporarily fixed to the top sheet 3 by the male material 47 in a peelable manner.

Usually, the fastening tape 40 of the diaper before use is in the state before the expansion as described above,
When wearing the diaper, the wearer wears the fastening portion 4
3 must be peeled off from the topsheet 3 and the fastening tape 40 must be developed.

At this time, according to the fastening tape 40 according to the first embodiment, the knob portion 49 folded back integrally with the fastening portion 43 on the surface of the top sheet 3 is parallel to the leading edge 49a thereof. While a valley fold 49b is formed, a grip portion 49 stands up from the top sheet 3 surface with the fold 49b as a boundary. Therefore, the knob 49 can be easily and reliably pinched, and the fastening portion 43 can be easily peeled from the top sheet 3 while resisting the peeling resistance force of the temporary fastening. Also,
Since the fold line 49b of the valley fold is formed on the knob 49, the knob 49 can be easily erected and the erected state can be maintained for a long time.

The fold 49b is formed by the knob 49
It is preferable that the knob portion 49 is formed at a position 5 mm or more from the tip edge 49a, because the knob portion 49 can be easily gripped. In addition, it is preferable that the height of the leading edge 49a from the surface of the top sheet 3 is 3 mm or more because it is easier to pick.

As the material of the tape base material 45, in addition to the non-woven fabric, a plastic film or a laminated material obtained by laminating the non-woven fabric with a plastic film can be applied. As the non-woven fabric, spun bond non-woven fabric, thermal bond non-woven fabric, melt blown non-woven fabric, spun lace non-woven fabric, etc. can be used. Etc. are used. A synthetic resin film such as PE or PP is used as the plastic film, and the bonding can be performed by a hot melt adhesive, heat fusion, or the like.

Further, the side flap 1 of the fixing portion 41.
As a fixing form to the sheet 5, the side flaps 15 may be narrowly attached to both the top sheet 3 and the back sheet 5 as shown in FIG. 2B, or the top sheet 3 or the back sheet 5 may be attached. It may be attached to only one side. The topsheet 3 of the side flap 15 may be formed by continuously extending the topsheet 3 of the back body 13 to the side, or
It may be a three-dimensional gathered sheet that has an upright portion and extends laterally from the upright portion.

3A and 3B are enlarged views showing a fastening tape 50 according to a modified example of the first embodiment. FIG. 3A is a plan view and FIG. 3B is FIG. 3A. Sectional drawing of the BB line inside is shown, respectively. The same components as those in the first embodiment are designated by the same reference numerals and will not be described in detail.

In the first embodiment, the fastening tape 4
When the knob portion 49 according to No. 0 is sharply erected at the fold line 49b, the fastening tape 50 according to the present modification is different in that it is curled in an arc shape without being fold line and is erected. . In other words, no fold line is formed in the knob portion 59, and the knob portion 59 is provided with a curl that gradually separates upward from the top sheet 3 surface as it goes to the tip thereof. The part 59 is standing. This winding curl is easily formed by blowing high temperature air to one surface of the knob portion 59 to heat-shrink the one surface.

Incidentally, it is preferable that this winding curl is attached from a position of 5 mm or more from the tip edge 59a of the knob portion 59 because the knob portion 59 can be easily picked. Further, the standing height of the tip edge 59a from the top sheet 3 surface is 3 mm.
When it is above, it becomes easier to pick and is preferable.

FIG. 4 is an enlarged view showing the fastening tape according to the second embodiment, and a plan view is shown in FIG.
FIG. 4B is a sectional view taken along the line BB in FIG. 4A. The same components as those in the first embodiment are designated by the same reference numerals and will not be described in detail.

In the first embodiment, the fastening tape 4
In order to make it easier to pick the knob 49 according to No. 0, the knob 49 is erected. However, the difference is that the knob 69 is folded back in the second embodiment. That is,
In the second embodiment, the grip portion 6 at the tip of the fastening portion 63 is provided.
9 is sharply folded back at the fold line 69b parallel to the tip edge 69a thereof to form a folded-back portion 69c.

Further, according to the second embodiment, since the knob portion 69 is thickened by the folded-back portion 69c, the knob portion 69 can be easily and surely pinched, so that the fastening portion can be secured. The part 63 can be easily peeled off from the top sheet 3. Further, since the tip edge 69a of the folded-back portion 69c is a free end, it can be floated upward as shown in FIG. 4 (c). In this case, the knob portion 69 can be more easily pinched. it can.

The folded-back portion 69c has a tip edge 69.
When the distance from a is 5 mm or more, the picking portion 69 is easy to pick, which is preferable.

FIG. 5 is an enlarged view showing the fastening tape according to the third embodiment, and FIG.
FIG. 5B shows a cross-sectional view taken along the line BB in FIG. 5A. The same components as those in the second embodiment are designated by the same reference numerals and will not be described in detail.

In the second embodiment, the folded-back portion 69c of the knob portion 69 is not fixed and the tip edge 69a is a free end. In the third embodiment, the folded-back portion 69a is The difference is that it is fixed to the upper surface of the fastening tape. That is, in the third embodiment, the folded-back portion 69c is bonded to the upper surface of the fastening tape so that the folded-back portion 69c does not return to its original position.

Incidentally, the degree of fixing of the folded-back portion 69c is sufficient if the folded-back portion does not return to the original position until just before the mounting operator develops the fastening tape. Therefore, the bonding does not have to be performed over the entire surface of the folded-back portion 69c, and it is sufficient to locally bond. Examples of this bonding method include a hot melt adhesive, heat sealing, and ultrasonic sealing.

Further, according to the third embodiment, since the knob portion 69 is thicker by the amount corresponding to the folded-back portion 69c, the knob portion 69 can be easily and surely pinched, so that the fastening can be prevented. The part 63 can be easily peeled off from the top sheet 3. Further, since the folded-back portion 69c is fixed, the folded-back state can be reliably maintained until the unfolding work.

The folded-back portion 69c has a tip edge 69.
It is preferable that the distance from a to 5 mm or more facilitates picking.

FIG. 5C shows a fastening tape 70 according to a modification of the third embodiment in the same sectional view as the arrow shown in FIG. 5B. The same components as those in the third embodiment are designated by the same reference numerals and will not be described in detail.

In the third embodiment, the fastening tape 6
When the grip portion 69 at the tip of the fastening portion 63 according to No. 0 is sharply folded back to form the folded-back portion 69c, the fastening tape 70 according to the present modification gently folded back in the loop shape to form the folded-back portion 79c. The difference is that. That is, in the present modification, the knob 79 is folded back while forming the gentle loop 72, and only the leading edge 79a of the folded back portion 79c is bonded to the upper surface of the fastening tape.

Further, according to this modification, the maximum thickness of the knob 79 can be made thicker by the amount of the loop 72 than in the third embodiment, so that the knob 79 can be further easily picked.

The folded-back portion 79c has a leading edge 79a.
It is preferable that the distance from a to 5 mm or more facilitates picking. Further, it is preferable that the loop thickness is 3 mm or more because it is easier to pick up.

Although the embodiment according to the present invention has been described above, the present invention is not limited to this embodiment, and the following modifications can be made without departing from the scope of the invention. (A) In this embodiment, the male member 47 of the surface fastener
However, it is needless to say that a hook member such as a fishing hook type, a T type, or a mushroom type that is generally used can be used as the male member 47. (B) In the present embodiment, a non-woven fabric having a substantially T-shaped outer shape is used as the tape base material 45 of the fastening tape, but the outer shape is not limited to this and may be, for example, a rectangular shape. (C) In the present embodiment, the corner portion at the tip of the fastening tape has a square shape, but the present invention is not limited to this, and the corner portion may be chamfered in an arc shape. In this case, irritation to the skin at the time of contact can be suppressed. (D) In the first embodiment, the knob portion 49 is erected parallel to the tip edge 49a of the knob portion 49 to form an upright portion having a rectangular shape in plan view, but the knob portion 49 is not limited to this. For example, as shown in an enlarged plan view in FIG. 6, only a corner portion 49d of the knob 49 may be raised to form a triangular raised portion. (E) In the second and third embodiments,
The knob 69 is folded back in parallel with the tip edge 69a to form a folded-back portion 69c having a rectangular shape in plan view.
It is not limited to this as long as 9 is folded back. For example, as shown in the enlarged plan view of FIG. 7, even if only the corner portion 69d of the knob 69 is folded back to form a triangular folded portion. good.

[0044]

As described above, according to the present invention,
It is possible to provide a disposable diaper in which the fastening tape before use, which is folded back on the back body and temporarily fixed to the top sheet surface in a peelable manner, can be easily peeled off.

[Brief description of drawings]

FIG. 1 is an enlarged plan view showing a fastening tape in a developed state according to a first embodiment.

FIG. 2 is an enlarged view showing the fastening tape according to the first embodiment before use, that is, before deployment.
2A shows a plan view and FIG. 2B shows a cross-sectional view taken along the line BB in FIG. 2A.

FIG. 3 is an enlarged view showing a fastening tape according to a modified example of the first embodiment, in which FIG. 3 (a) is a plan view and FIG. 3 (b) is B in FIG. 3 (a). -B shows sectional drawing of a line arrow respectively.

FIG. 4 is an enlarged view showing a fastening tape according to a second embodiment, showing a plan view in FIG. 4 (a) and FIG. 4 (b).
And FIG.4 (c) shows the sectional view of the BB line arrow in FIG.4 (a), respectively.

FIG. 5 is an enlarged view showing a fastening tape according to a third embodiment, showing a plan view in FIG. 5 (a) and FIG. 5 (b).
5 is a cross-sectional view taken along the line BB in FIG.
(C) shows sectional views of modified examples of the third embodiment.

FIG. 6 is an enlarged plan view of a fastening tape according to a modified example of the first embodiment.

FIG. 7 is an enlarged plan view of a fastening tape according to a modified example of the second embodiment.

FIG. 8 is a partially cutaway plan view showing a developed disposable diaper in a developed state.

FIG. 9 is a perspective view showing a mounted state of a deployable disposable diaper.

FIG. 10 is an enlarged view showing a state before deployment of the conventional fastening tape, FIG. 10 (a) is a plan view and FIG.
10B is a cross-sectional view taken along the line BB of FIG. 10A.

[Explanation of symbols]

1 diaper body 3 top sheet 4 absorber 5 back sheet 11 front body 13 back body 15 side flaps 15a Side flap side end (side end) 40 fastening tape 41 Fixed part 43 Fastening part 45 Tape base material 47 Male fasteners 49 Picking part

Claims (7)

[Claims] 1. A diaper body having a liquid-retaining absorber between a non-woven liquid-permeable top sheet and a liquid-impermeable back sheet, and a rear body of the diaper body is fastened to the front body when worn. Therefore, in a disposable diaper having a fastening tape fixed to a side end portion of the rear body and protruding laterally from this, the protruding portion of the fastening tape includes a fastening portion including a male member of a hook-and-loop fastener, and The fastening tape comprises a knob at the tip of the fastening portion, and before the fastening tape is used, the protruding portion is folded back onto the topsheet surface of the back body and is temporarily fixed to the topsheet by the male material so as to be peelable. On the other hand, in the disposable diaper, the picking portion is erected on the top sheet surface. 2. The disposable diaper according to claim 1, wherein a valley fold is formed on the knob. 3. The disposable diaper according to claim 2, wherein the fold line is formed within a range of 5 mm or more from a tip edge of the knob. 4. The standing height of the tip edge of the knob is 3 mm.
It is above, The disposable diaper in any one of the Claims 1 thru | or 3 characterized by the above-mentioned. 5. A diaper body provided with a liquid-retaining absorber between a liquid-permeable top sheet and a liquid-impermeable back sheet made of a non-woven fabric, and the rear body of the diaper body is fastened to the front body when worn. Therefore, in a disposable diaper having a fastening tape fixed to a side end portion of the rear body and protruding laterally from this, the protruding portion of the fastening tape includes a fastening portion including a male member of a hook-and-loop fastener, and The fastening tape comprises a knob at the tip of the fastening portion, and before the fastening tape is used, the protruding portion is folded back onto the topsheet surface of the back body and is temporarily fixed to the topsheet by the male material so as to be peelable. On the other hand, the disposable diaper is characterized in that a tip of the pick portion is further folded back to form a folded portion. 6. The disposable diaper according to claim 5, wherein the folded-back portion is fixed to an upper surface of the fastening tape. 7. The disposable diaper according to claim 5, wherein the folded-back portion extends over a range of 5 mm or more from the tip edge of the knob portion.